Lubrication of milk-centrifuges and the like.



H. HOLTE.

LUBRICATION 0F MILK CENTRIFUGES AND THE LIKE.

APPLICATION Fl LED DEC.5. 19:1.

1,281,572. Patented Oct. 15, 1918.

3 SHEETS-SHEET l.

H HOLTE.

LUBRICATION 0F MILK CENTRIFUGES AND THE LIKE.

APPLICATION FILED use. 5. 1911.

1,281,572., Patented Oct. 15, 1918.

3 SHEETSSHEET 2.

Fig. 2.

H. HOLTE.

LUBRICATION 0F MILK CENTRIFUGES AND THE LIKE.

APPLICATION men DEc.5..'\9 |z.

1381,57. mm 00t.15, 1918..

ISHEETS-SHEII 3-.

HALVOB, HOLTE, or SKIEN', NORWAY.

LUBRICATION OF MILK-CENTRIFUGES AND THE LIKE.

To all whom it may concern:

Be it known that I, HALVOR Hours, a subject of the King of Norway, residing at Skien, in the Kingdom of Norway, have invented certain new and useful Improve ments in the Lubrication of Milk-Centrifuges and the like; and I do hereby declare the following to be a full, clear, and exact I description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters or figures of reference marked thereon, which form a part of this specification.

This invention relates to improvements in phe lubrication of milk centrifuges and the ike.

The invention is illustrated in the accompanying drawings, Figure lbeing a vertical section through a milk centrifuge provided with the improved lubricating means. and

Fig. 2 a corresponding section taken at right angles to Fig. 1. Fig. 3 shows a detail.

The base 1 of the centrifuge'frame is in a known way formed as a lubricating. oil receptacle. To this base the upper part 2 of the centrifuge frame is fastened completely tight by the aid of screws 3 or the like. As will be seen, the part 2 of the frame completely incloses all movable parts of the mechanism, having only openings for the centrifuge spindle 4 and the crank shaft 5.

A slowly rotating gear 6 (with from to 70 revolutions perminute) reaches down into the oil, and by adhesion carries with its teeth a quantity of oil upward. Part' of this adheringoil is scraped off by aidof a shoot 7, carrying the oil into annularchannel or receptacle 9 arranged at the lower end of the bolster 8 of the centrifuge spindle 4. From this receptacle 9 the oil passes through one or more openings 10 to the surface of the spindle. The said openings 8 open into a spiral groove 11 in the inner surface of the bolster body. This spiral groove carries with it the oil upward along the surface of the spindle, through the action of the rotating spindle. At the upper end of the bolster 8 the spiral groove 11 terminates in an enlarged portion or annular channel 12. From this channel 12 the oil passes through one or more openings 13 into the open space between the bolster and the frame, in which the bolster spring is in- Specification of Letters Patent.

not shown. The oil dripping down from the openings 13is again caught up by the annular receptacle 9. As there will always be fed more oil to the receptacle 9 than is carried up through the spiral groove 11, this receptacle will act as an overflow, and some of this overflowing oil will fall on the rapidly moving gears of the mechanism, and is by these splashed all over the inclosed mechanism in the usual way, so as to continuously lubricate all parts. In order to admit the lubricating oil to the bearings of the horizontal shafts their bosses within the frame 2 may be furnished with upwardly opening borings 15.

In the drawings the shoot 7 is shown mounted on a rod 16, and can only be removed after disconnecting the frame parts 1 and 2. The shoot 7 may however also be fastened on a screw bolt 18 (see Fig. 3) inserted through the bottom 17 of the centrifuge, in order to enable the adjustment and eventually the removal of the shoot through the opening for the spindle 4.

There is that important difference between the .present arrangement and these hitherto known, that as the oil in the oil receptacle '1 is never violently agitated, being only slightly agitated by the slowly rotating gear 6, the impurities which are by wear and in other ways introduced into the oil will have opportunity to segregate in the deepest part 14 of the oil receptacle. The 'oil fed to the bolster and afterward splashed about in the gear chamber by the rapidly rotating gears, therefore will be practically free of impurities. In the constructions where the lubricating oil in the bottom receptacle is violently agitated by rapidly rotating gears, a segregation of the impurities is impossible, and these are therefore splashed about until they adhere to some part of the mechanism and this of course lessens the duration of the'lubricating effect of a given quantity of oil. and it is therefore of importance that violent agitation of the oil is avoided as by the present improvement.

The arrangement is especially designed for manually driven milk centrifuges, in

Patented oct. 15, 1918. Application filed December 5, 1917. Serial N 0. 205,569.

being only necessary to interpose a slowlyrotating wheel exclusively serving to lift up oil from thelubricating oil receptacle.

Claims. 1. In a lubricating mechanism, the combination of an oil receptacle, a gear dipping into oil therein, a centrifuge spindle in the receptacle, a bolster for the spindle, an oil" bolster whereby oil 1s returned to the over-- flow receiver.

2. In a lubricating mechanism the combination of an oil receptacle, a gear dipping intooil therein, a centrifuge spindle in the receptacle,'.a bolster for the spindle, a helical feed-groove in the bolster adjacent the spindle, an annular overflow receiver'on the bolster communicating with the feed-groove,

a shoot arranged to scrapepil from the gear and transfer it to the receiver, and a'chamber at the upper end of the bolster communicatin'g withthe feed groove and having openings outside the bolster whereby oil passes from the chamber back to said receiver.

In testimony thatI claim the foregoing as .myinvention, I have signed my name in presence of two subscribing witnesses. HALVOR HOLTE; Witnesses:.-

C. VORMAN,

C. FA mcIN's HANSEN, 

